In Winnr go to Email Users → Export, choose LeadEngine, click Export, then Download CSV. The file has each mailbox's address, name, password and SMTP and IMAP host and port. Add the mailboxes in LeadEngine with its import for SMTP/IMAP accounts, then set each mailbox's daily limit there.
LeadEngine is an AI cold-email platform that writes and sends personalized sequences. Winnr provisions and warms the mailboxes; LeadEngine runs the campaigns.
Sending limits
Keep cold sending at 10 to 20 emails per mailbox per day (15 is a good default), and keep each mailbox's total, cold plus warming, at 50 or under. Warm new mailboxes for at least two weeks before they send cold, and longer on a brand-new domain.
What's next
Step-by-step
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1. Select the mailboxes in Winnr
Open Email Users and tick the mailboxes you want for this campaign. Search or the Domain filter help you find them. If nothing is ticked, the export includes every mailbox in your account.
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2. Export in the LeadEngine format
Click Export, choose LeadEngine under Export Format (type in the search box to find it quickly), then click the Export button.
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3. Download the CSV
Click Download CSV as soon as it appears. The link is short-lived, so if it has expired just run the export again. The file holds mailbox passwords in plain text, so keep it private.
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4. Add the mailboxes in LeadEngine
In LeadEngine, open your email-account settings and use its import for SMTP/IMAP accounts with the Winnr file.
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5. Set limits and confirm
The file has no daily-limit column, so set each mailbox's limit in LeadEngine. Check every mailbox connected before starting a campaign.
Frequently asked questions
What is in the LeadEngine file?
email, name, user_name, password, smtp_host, smtp_port, imap_host, imap_port, imap_username and imap_password. name is the mailbox's display name, and user_name and imap_username are the full email address.
What daily limit should I set?
10 to 20 cold emails per mailbox per day (15 is a good default), and 50 or under in total including warming.
Should I use LeadEngine's warmup or Winnr's?
Pick one per mailbox. Winnr's built-in warming is $0.60 per mailbox per month; if you use it, keep LeadEngine's warmup off so the mailbox is not warmed twice and stays at 50 emails a day or less in total.
What connection settings are in the file?
Each row carries that mailbox's own SMTP host (port 465, SSL) and IMAP host (port 993, SSL). The username is the full email address, and the same password works for SMTP and IMAP. Mailboxes on different domains can use different hosts, so keep the values from each row rather than copying one host across every mailbox.
Some mailboxes failed to connect. What now?
The usual cause is an old password: a password changed in Winnr after the export will not match the file. Export those mailboxes again and re-import them. If a fresh export still fails, see the mailbox authentication troubleshooting guide.